Kofi Clarke

Prof. Dr. Kofi Clarke

orcid

Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 May 2018 in Inflammatory Bowel Diseases
Verified
Journal Article
Closed access
PDF file
SNSeyedehsan Navabi
Seyedehsan Navabi
VGVenkata Subhash Gorrepati
Venkata Subhash Gorrepati
SYSanjay Yadav
Sanjay Yadav
JCJaykrishna Chintanaboina
Jaykrishna Chintanaboina
SMSarah Maher
Sarah Maher
MCMatthew D Coates
Matthew D Coates
Individuals with inflammatory bowel disease (IBD) are at increased risk of developing anxiety or depression (A&D). Crohn’s disease (CD) and ulcerative colitis (UC) with comorbid A&D are both more challenging to manage. IBD providers need to better understand the causes and impact of A&D in order to improve care for IBD patients. We sought to identify clinical factors that influence development of A&D and healthcare utilization in IBD. This is a retrospective analysis using an IBD natural history registry from a single tertiary care referral center. Presence of A&D was determined based upon responses to the Hospital Anxiety and Depression Scale. Demographic and clinical factors were abstracted to evaluate for significant associations. Four hundred thirty-two IBD patients (132 UC, 256 CD, and 44 indeterminate colitis) were included in this study. One hundred ninety-two (44.4%) had anxiety or depression or both, and most were female (59.4%, P < 0.05). History of surgery (P < 0.05), female gender (P < 0.05), smoking (P < 0.05), and extra-intestinal manifestations (P < 0.01) were each independently predictive of A&D. Inflammatory bowel disease patients with A&D more often underwent imaging studies (53.6% vs 36.7%, P < 0.05), visited the ED (30.7% vs 20.8%, P < 0.05), or were hospitalized (31.7% vs 21.7%, P < 0.05). They were also more frequently prescribed corticosteroids (50.5% vs 36.7%, P < 0.01) and biologic medications (62.5% vs 51.3%, P < 0.05). Finally, they were more likely to have had at least 1 “no-show” (29.2% vs 16.7%, P < 0.01) and had a higher mean number of “no-shows” (0.69 +/- 0.1 vs 0.30 +/- 0.1, P < 0.01) over the study period. Anxiety and depression are common in the setting of IBD and are strongly associated with surgical history, disease complications (including extra-intestinal manifestations), smoking, and female gender. Inflammatory bowel disease patients with A&D are also more likely to require therapy and to utilize healthcare resources. This study refines our understanding of A&D development and its impact in IBD and provides additional considerations for management in this setting.

18 July 2018 in Inflammatory Bowel Diseases
Verified
Journal Article
Closed access
PDF file
ATAndrew Tinsley
Andrew Tinsley
SNSeyedehsan Navabi
Seyedehsan Navabi
EWEmmanuelle D Williams
Emmanuelle D Williams
GLGuodong Liu
Guodong Liu
LKLan Kong
Lan Kong
KCKofi Clarke
Kofi Clarke
Diseases of immune dysregulation are associated with an increased risk of viral infections, some of which may be preventable. To date, there are very limited data on the incidence and risk of influenza and related complications in patients with inflammatory bowel disease (IBD). Furthermore, the impact of immunosuppressive medications on that risk is unclear. Therefore, the aim of this study was to estimate the incidence and severity of influenza infections in IBD patients. In addition, we looked specifically at the effect of medications on influenza risk. Using the MarketScan Database (January 2008 to December 2011), we conducted a retrospective cohort study to estimate the incidence of influenza and risk of related complications in IBD patients compared with those without IBD. We employed a nested case–control study design to evaluate the potential independent effect of IBD medications on influenza risk. A total of 140,480 patients with IBD and non-IBD controls were studied. There were 2963 patients with influenza compared with 1941 non-IBD subjects. Inflammatory bowel disease patients had an increased influenza risk compared with those without IBD (incidence rate ratio, 1.58; 95% confidence interval [CI], 1.49–1.68). A higher rate of hospitalizations (162/2994 [5.4%] vs 36/1941 [1.85%]; P < 0.001) was noted. Systemic corticosteroids were found to be independently associated with influenza (odds ratio, 1.22; 95% CI, 1.08–1.38). Inflammatory bowel disease patients had an increased risk of influenza compared with those without IBD and were more likely to require hospitalization. Steroids were the only medication class independently associated with flu risk.

2 June 2018 in Clinical Reviews in Allergy & Immunology
Verified
Journal Article
Closed access
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BMBrian P. McAllister
Brian P. McAllister
EWEmmanuelle Williams
Emmanuelle Williams
KCKofi Clarke
Kofi Clarke

2 August 2012 in Digestive Diseases and Sciences
Verified
Journal Article
Closed access
PDF file
ABArthur Barrie
Arthur Barrie
MMMarwa El Mourabet
Marwa El Mourabet
KWKatherine Weyant
Katherine Weyant
KCKofi Clarke
Kofi Clarke
MGMahesh Gajendran
Mahesh Gajendran
DBDavid G. Binion
David G. Binion

1 September 2020 in Clinical and Experimental Gastroenterology
Verified
Journal Article
Open access
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JDJessica Dahmus
Jessica Dahmus
MRMichelle Rosario
Michelle Rosario
KCKofi Clarke
Kofi Clarke
Anti-tumor necrosis factor alpha (ATA) therapy plays a significant role in the treatment of moderate to severe inflammatory bowel disease (IBD). There are concerns regarding risks associated with their use, including malignancy and, specifically, lymphoma. Many previous studies have sought to determine whether there is a true link between ATA therapy in IBD and development of lymphoma. However they have been hindered by short follow-up times, few cases, and confounding factors such as previous thiopurine exposure. This review seeks to update the literature by evaluating more recent studies assessing the link between ATA monotherapy and lymphoma development. It also summarizes findings of those studies and provides additional clinical guidance pertaining to this class of biologic therapy.

8 February 2008 in Digestive Diseases and Sciences
Verified
Journal Article
Closed access
PDF file
KCKofi Clarke
Kofi Clarke
RSRabindra Sagunarthy
Rabindra Sagunarthy
SKSheru Kansal
Sheru Kansal